Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
cao hoi » cau hoi, co hoi, cao hoc
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ve cam » ve cham, ve cac, va cam
va cao » va cac, va co, va dao
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang cao hoi. hieu ((ve cam) or (va cao)) luc va thanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang cao hoi. hieu ((ve cam) OR (va cao)) luc va thanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang cao hoi. hieu ((ve cam) or (va cao)) luc va thanh vi cua vat*.